I'm thinking about buying a an edge 500...
I'm thinking about buying a an edge 500 within the next few months but in the mean time I was wondering if the GSC 10 sensor would work with the iPhone using the strava or mapmyride apps. Does any use the sensor with their iPhone and not a Garmin?
You would need to get the Garmin ANT+ iPhone adaptor to use the Speed/Cadence sensor ... and download and use the Garmin Fit app. You will definitely be able to upload your information to Garmin Connect; but I don't think there is a direct way to upload it into Strava using the speed/cadence sensor, you'd likely have to upload to Garmin Connect, then export from Connect and import into Strava.